board/pandora/pandora.c

   1 /*
   2  * (C) Copyright 2008
   3  * Grazvydas Ignotas <notasas@gmail.com>
   4  *
   5  * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
   6  *      Richard Woodruff <r-woodruff2@ti.com>
   7  *      Syed Mohammed Khasim <khasim@ti.com>
   8  *      Sunil Kumar <sunilsaini05@gmail.com>
   9  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
  10  *
  11  * (C) Copyright 2004-2008
  12  * Texas Instruments, <www.ti.com>
  13  *
  14  * See file CREDITS for list of people who contributed to this
  15  * project.
  16  *
  17  * This program is free software; you can redistribute it and/or
  18  * modify it under the terms of the GNU General Public License as
  19  * published by the Free Software Foundation; either version 2 of
  20  * the License, or (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  30  * MA 02111-1307 USA
  31  */
  32 #include <common.h>
  33 #include <twl4030.h>
  34 #include <asm/io.h>
  35 #include <asm/arch/mmc_host_def.h>
  36 #include <asm/arch/mux.h>
  37 #include <asm/arch/gpio.h>
  38 #include <asm/arch/sys_proto.h>
  39 #include <asm/mach-types.h>
  40 #include "pandora.h"
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 #define TWL4030_BB_CFG_BBCHEN           (1 << 4)
  45 #define TWL4030_BB_CFG_BBSEL_3200MV     (3 << 2)
  46 #define TWL4030_BB_CFG_BBISEL_500UA     2
  47
  48 /*
  49  * Routine: board_init
  50  * Description: Early hardware init.
  51  */
  52 int board_init(void)
  53 {
  54         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  55         /* board id for Linux */
  56         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_PANDORA;
  57         /* boot param addr */
  58         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  59
  60         return 0;
  61 }
  62
  63 /*
  64  * Routine: misc_init_r
  65  * Description: Configure board specific parts
  66  */
  67 int misc_init_r(void)
  68 {
  69         struct gpio *gpio1_base = (struct gpio *)OMAP34XX_GPIO1_BASE;
  70         struct gpio *gpio4_base = (struct gpio *)OMAP34XX_GPIO4_BASE;
  71         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
  72         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
  73
  74         twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
  75
  76         /* Configure GPIOs to output */
  77         writel(~(GPIO14 | GPIO15 | GPIO16 | GPIO23), &gpio1_base->oe);
  78         writel(~GPIO22, &gpio4_base->oe);       /* 118 */
  79         writel(~(GPIO0 | GPIO1 | GPIO28 | GPIO29 | GPIO30 | GPIO31),
  80                 &gpio5_base->oe);       /* 128, 129, 156-159 */
  81         writel(~GPIO4, &gpio6_base->oe);        /* 164 */
  82
  83         /* Set GPIOs */
  84         writel(GPIO28, &gpio5_base->setdataout);
  85         writel(GPIO4, &gpio6_base->setdataout);
  86
  87         /* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
  88         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
  89                 TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV |
  90                 TWL4030_BB_CFG_BBISEL_500UA, TWL4030_PM_RECEIVER_BB_CFG);
  91
  92         dieid_num_r();
  93
  94         return 0;
  95 }
  96
  97 /*
  98  * Routine: set_muxconf_regs
  99  * Description: Setting up the configuration Mux registers specific to the
 100  *              hardware. Many pins need to be moved from protect to primary
 101  *              mode.
 102  */
 103 void set_muxconf_regs(void)
 104 {
 105         MUX_PANDORA();
 106 }
 107
 108 #ifdef CONFIG_GENERIC_MMC
 109 int board_mmc_init(bd_t *bis)
 110 {
 111         omap_mmc_init(0);
 112         return 0;
 113 }
 114 #endif